1 2

Seiko Prospex

SLA021J1

SLA021J1

$4,569
$6,085 $4,569
$1,516 Savings Sold out
Box included. Shipping calculated at checkout.

In stock
  • Add to cart for additional discounts
  • 100% authentic with box and warranty
  • Same day ship-out (before 5pm)
  • Pickup ready in 2 hours
  • Members Exclusive
  • Free same-day delivery for orders above $500
  • Earn points & redeem vouchers up to $100 off

Seiko Prospex x Automatic ft. Professional Marinemaster Men Diver Round 300m Water Resistant Watch SLA021J1 SLA021 SLA-021 SLA-021J1

Explore the SLA021J1, a watch that initially resembles the Marinemaster 300 SBDX001 but has subtle differences. Featuring a sapphire crystal and ceramic bezel, it is gaining iconic status among enthusiasts and reflects its value despite previous perceptions. The SLA021J1 remains an excellent choice, complete with a comfortable rubber strap and a legacy honoring the SBDX017.

Caliber Number / Movement
8L35 (automatic with manual winding capacity)

Power Reserve / Accuracy
Approximately 50 hours (+15 to -10 seconds per day)

Crystal
Sapphire crystal (anti-reflective coating)

LumiBrite
Lumibrite on hands, indexes and bezel

Case / Band Material
Stainless steel (super hard coating) case, ceramic bezel insert with stainless steel band (three-fold clasp with secure lock, push-button release with slide extender)

Water Resistance
300m / 1,000ft diver

Case Size
Thickness: 15.4 mm
Diameter: 44.3 mm
Length: 50.5 mm

Other Specifications
Seiko Prospex x Automatic ft. Professional Marinemaster
Made in Japan
Additional silicone strap inclusive
28,800 vibrations per hour (8 beats per second)
Unidirectional rotating bezel
One-piece structure
Screw-down crown
26 jewels
Date display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)

View full details